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Viscount Plastics – Variable speed drives increase profitability

An energy audit at Viscount Plastics recommended the installation of variable speed drives. As a result, Viscount Plastics are saving $38,000 in energy costs.

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Link to case study

Plastics New Zealand – Best practice energy programme

Plastics New Zealand established a Best Practice Energy Programme to help improve the bottom line of their member companies.

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Plastics NZ case study

Axiam Plastics

Axiam Plastics us saving nearly 13,000kWh a year from its switch to heat pump-generated hot water. The new system is proving more reliable than the old electric-resistive water heating and delivering a more consistent temperature, which is boosting productivity.

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 Axiam Plastics

Viscount Plastics - energy audit upgrades

An energy audit has prompted Viscount Plastics to upgrade their cooling water system making it more energy-efficient and cheaper to run. The upgrade reduced energy use at the Auckland factory by around 325,000 kWh a year - a saving of about $38,000.

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Viscount Plastics

Talbot Plastics - all-electric moulding machine

Talbot Plastics has installed an electric moulding machine which uses 35% of the energy used by the old hydraulic machine. The company now saves $4,500 in total costs as well as CO2 savings of nearly 11.8 tonnes a year.

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 Talbot Plastics

Axiam plastics - efficient vacuum drying

A new vacuum dryer at Axiam Plastics in Wanganui is saving energy, space and time. The new dryer removes moisture from plastic granules before they are melted and moulded into shape and has cut the company's electricity bill by almost $4,000 a year.

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Axium Plastics

Quality Equipment - new motor drive technology saves money

Quality Equipment improved the efficiency of their stretch extruder by replacing the eddy current coupling and motor with a directly-coupled motor and a variable speed drive (VSD). This resulted in annual electricity savings of 13,250kWh.

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Stretch extruder at Quality Equipment

LinkPlas - reduces cooling fan costs with variable speed drive

LinkPlas avoided large water temperature fluctuations by installing a temperature sensor connected to a variable speed drive which controlled fan speed.

By linking the speed of the fan with the temperature of the water in the cooling tower bowl they have achieved estimated electricity savings from the fan of 8,300kWh per annum.

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Cooling tower at LinkPlas

Millennium Plastics - reduces chilled water circulation costs with PLC

Millennium Plastics moved their chiller's temperature probe from the chiller to the chilled water reservoir and installed a programmable logic controller (PLC) to control the evaporator circulation pump.

These changes to the control system reduced annual electricity use by 7,100kWh.

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Millennium Plastics chilled water circulation system with PLC

Rohm and Haas - making their water pumping more efficient

Rohm and Haas reduced the costs of their cooling water circulation system by fitting a variable speed drive. This resulted in electricty savings of 49,680kWh, producing a cost saving of $5,460 per year.

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 Water circulation pump at Rohm and Haas